*{
	margin: 0;
}
.first_img
{
	opacity:0.8;
	filter:alpha(opacity=80); /* 针对 IE8 以及更早的版本 */
}
.first_img:hover
{
	opacity:1.0;
	filter:alpha(opacity=100); /* 针对 IE8 以及更早的版本 */
}
#station {
	font-size: 18px;
	font-family:"黑体";
	color: #f35626;
	background-image: -webkit-linear-gradient(92deg, #f35626, #5358fe);
	-webkit-background-clip: text;
	color: transparent;
	-webkit-animation: hue 60s infinite linear;
}
@-webkit-keyframes hue {
	from {
		-webkit-filter: hue-rotate(0deg);
	}
	to {
		-webkit-filter: hue-rotate(-360deg);
	}
}
#head{
	background-color: rgb(77, 139, 188);
	height: 30px; 
	width: 100%; 
	position: fixed;
	overflow-y:auto;
	z-index: 9999;
	text-align: center;
	font-size: 17px;
	line-height: 30px;
}
#constant{
	padding-top: 30px;
	height: 343px;
	width: 960px;
	margin: 0 auto;
}
#navigation{
	width: 100%; 
	height: 50px; 
	background-color: rgb(77, 139, 188);
	margin-top: 1px;
	margin-bottom: 1px;
}
#navigation table{
	width: 100%;
	height: 100%;
}
#navigation table th{
	text-align: center;
}
#navigation table th a{
	font-size: 23px;
	color: white;
	text-decoration: none;
}
#navigation table th a:hover{
	color: blue;
}
#search-box{
	width: 100%; 
	height: 46px;
	border: 1px gainsboro solid;
}
#search-box div{
	width:96%;
	height: 26px; 
	margin:7px auto;
}
#search-box table{
	height: 26px; 
	width: 900px; 
}
#search-box td{
	display: inline-block;
}
